In article <[EMAIL PROTECTED]> (at Wed, 25 Apr 2007 00:58:45 +0900 (JST)),
YOSHIFUJI Hideaki / 吉藤英明 <[EMAIL PROTECTED]> says:
> In article <[EMAIL PROTECTED]> (at Tue, 24 Apr 2007 17:53:24 +0200), Adrian
> Bunk <[EMAIL PROTECTED]> says:
>
> > On Wed, Apr 25, 2007 at 12:17:43AM +0900, YOSHIFUJI Hideaki / 吉藤英明 wrote:
> > > Recent ktime_t changes had introduced linkage errors.
> > >
> > > | WARNING: "__divdi3" [net/ipv4/tcp_veno.ko] undefined!
> > > | WARNING: "__divdi3" [net/ipv4/tcp_vegas.ko] undefined!
> > > | WARNING: "__divdi3" [net/ipv4/tcp_lp.ko] undefined!
> > > | WARNING: "__divdi3" [net/ipv4/tcp_illinois.ko] undefined!
> > >
> > > Signed-off-by: YOSHIFUJI Hideaki <[EMAIL PROTECTED]>
> > >
> > > ---
> > > diff --git a/net/ipv4/tcp_illinois.c b/net/ipv4/tcp_illinois.c
> > > index 8e31659..0cec615 100644
> > > --- a/net/ipv4/tcp_illinois.c
> > > +++ b/net/ipv4/tcp_illinois.c
> > > @@ -87,10 +87,12 @@ static void tcp_illinois_acked(struct sock *sk, u32
> > > pkts_acked, ktime_t last)
> > > {
> > > struct illinois *ca = inet_csk_ca(sk);
> > > u32 rtt;
> > > + struct timeval tv;
> > >
> > > ca->acked = pkts_acked;
> > >
> > > - rtt = ktime_to_ns(net_timedelta(last)) / NSEC_PER_USEC;
> > > + tv = ktime_to_timeval(net_timedelta(last));
> > > + rtt = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
> > >
> > > /* ignore bogus values, this prevents wraparound in alpha math */
> > > if (rtt > RTT_MAX)
> > >...
> >
> > Couldn't this be better solved by adding something like the following
> > to include/linux/ktime.h ?
> >
> > static inline s64 ktime_to_us(const ktime_t kt)
> > {
> > return (s64) kt.tv.sec * USEC_PER_SEC + kt.tv.nsec / NSEC_PER_USEC;
> > }
> >
>
> That will introduce same error, won't it?
How about this?
Singed-off-by: YOSHIFUJI Hideaki <[EMAIL PROTECTED]>
diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index 248305b..601a74e 100644
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -259,6 +259,12 @@ static inline s64 ktime_to_ns(const ktime_t kt)
#endif
+static inline s64 ktime_to_us(const ktime_t kt)
+{
+ struct timeval tv = ktime_to_timeval(kt);
+ return tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
+}
+
/*
* The resolution of the clocks. The resolution value is returned in
* the clock_getres() system call to give application programmers an
diff --git a/net/ipv4/tcp_illinois.c b/net/ipv4/tcp_illinois.c
index 8e31659..4adc47c 100644
--- a/net/ipv4/tcp_illinois.c
+++ b/net/ipv4/tcp_illinois.c
@@ -90,7 +90,7 @@ static void tcp_illinois_acked(struct sock *sk, u32
pkts_acked, ktime_t last)
ca->acked = pkts_acked;
- rtt = ktime_to_ns(net_timedelta(last)) / NSEC_PER_USEC;
+ rtt = ktime_to_us(net_timedelta(last));
/* ignore bogus values, this prevents wraparound in alpha math */
if (rtt > RTT_MAX)
diff --git a/net/ipv4/tcp_lp.c b/net/ipv4/tcp_lp.c
index b4e062a..43294ad 100644
--- a/net/ipv4/tcp_lp.c
+++ b/net/ipv4/tcp_lp.c
@@ -266,7 +266,7 @@ static void tcp_lp_pkts_acked(struct sock *sk, u32
num_acked, ktime_t last)
struct tcp_sock *tp = tcp_sk(sk);
struct lp *lp = inet_csk_ca(sk);
- tcp_lp_rtt_sample(sk, ktime_to_ns(net_timedelta(last)) /
NSEC_PER_USEC);
+ tcp_lp_rtt_sample(sk, ktime_to_us(net_timedelta(last)));
/* calc inference */
if (tcp_time_stamp > tp->rx_opt.rcv_tsecr)
diff --git a/net/ipv4/tcp_vegas.c b/net/ipv4/tcp_vegas.c
index 0f0ee7f..73e19cf 100644
--- a/net/ipv4/tcp_vegas.c
+++ b/net/ipv4/tcp_vegas.c
@@ -118,7 +118,7 @@ void tcp_vegas_pkts_acked(struct sock *sk, u32 cnt, ktime_t
last)
u32 vrtt;
/* Never allow zero rtt or baseRTT */
- vrtt = (ktime_to_ns(net_timedelta(last)) / NSEC_PER_USEC) + 1;
+ vrtt = ktime_to_us(net_timedelta(last)) + 1;
/* Filter to find propagation delay: */
if (vrtt < vegas->baseRTT)
diff --git a/net/ipv4/tcp_veno.c b/net/ipv4/tcp_veno.c
index 0b50d06..9edb340 100644
--- a/net/ipv4/tcp_veno.c
+++ b/net/ipv4/tcp_veno.c
@@ -75,7 +75,7 @@ static void tcp_veno_pkts_acked(struct sock *sk, u32 cnt,
ktime_t last)
u32 vrtt;
/* Never allow zero rtt or baseRTT */
- vrtt = (ktime_to_ns(net_timedelta(last)) / NSEC_PER_USEC) + 1;
+ vrtt = ktime_to_us(net_timedelta(last)) + 1;
/* Filter to find propagation delay: */
if (vrtt < veno->basertt)
--
YOSHIFUJI Hideaki @ USAGI Project <[EMAIL PROTECTED]>
GPG-FP : 9022 65EB 1ECF 3AD1 0BDF 80D8 4807 F894 E062 0EEA
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